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nfp: remove support for nfp3200

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Drop all code related to nfp3200.  It was never widely deployed
as a NIC.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2016-10-31 20:43:10 +00:00 committed by David S. Miller
parent 7ff5c83a1d
commit 416db5c1e4
4 changed files with 22 additions and 138 deletions
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7
drivers/net/ethernet/netronome/nfp/nfp_net.h
View File

@ -421,7 +421,6 @@ struct nfp_stat_pair {
* @netdev: Backpointer to net_device structure
* @nfp_fallback: Is the driver used in fallback mode?
* @is_vf: Is the driver attached to a VF?
* @is_nfp3200: Is the driver for a NFP-3200 card?
* @fw_loaded: Is the firmware loaded?
* @bpf_offload_skip_sw: Offloaded BPF program will not be rerun by cls_bpf
* @ctrl: Local copy of the control register/word.
@ -487,7 +486,6 @@ struct nfp_net {
unsigned nfp_fallback:1;
unsigned is_vf:1;
unsigned is_nfp3200:1;
unsigned fw_loaded:1;
unsigned bpf_offload_skip_sw:1;
@ -593,16 +591,13 @@ static inline void nn_writeb(struct nfp_net *nn, int off, u8 val)
writeb(val, nn->ctrl_bar + off);
}
/* NFP-3200 can't handle 16-bit accesses too well */
static inline u16 nn_readw(struct nfp_net *nn, int off)
{
WARN_ON_ONCE(nn->is_nfp3200);
return readw(nn->ctrl_bar + off);
}
static inline void nn_writew(struct nfp_net *nn, int off, u16 val)
{
WARN_ON_ONCE(nn->is_nfp3200);
writew(val, nn->ctrl_bar + off);
}
@ -650,7 +645,7 @@ static inline void nn_pci_flush(struct nfp_net *nn)
#define NFP_QCP_QUEUE_STS_HI 0x000c
#define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask 0x3ffff
/* The offset of a QCP queues in the PCIe Target (same on NFP3200 and NFP6000 */
/* The offset of a QCP queues in the PCIe Target */
#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
/* nfp_qcp_ptr - Read or Write Pointer of a queue */

95
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
View File

@ -248,44 +248,15 @@ int nfp_net_reconfig(struct nfp_net *nn, u32 update)
/* Interrupt configuration and handling
*/
/**
* nfp_net_irq_unmask_msix() - Unmask MSI-X after automasking
* @nn: NFP Network structure
* @entry_nr: MSI-X table entry
*
* Clear the MSI-X table mask bit for the given entry bypassing Linux irq
* handling subsystem. Use *only* to reenable automasked vectors.
*/
static void nfp_net_irq_unmask_msix(struct nfp_net *nn, unsigned int entry_nr)
{
struct list_head *msi_head = &nn->pdev->dev.msi_list;
struct msi_desc *entry;
u32 off;
/* All MSI-Xs have the same mask_base */
entry = list_first_entry(msi_head, struct msi_desc, list);
off = (PCI_MSIX_ENTRY_SIZE * entry_nr) +
PCI_MSIX_ENTRY_VECTOR_CTRL;
writel(0, entry->mask_base + off);
readl(entry->mask_base);
}
/**
* nfp_net_irq_unmask() - Unmask automasked interrupt
* @nn: NFP Network structure
* @entry_nr: MSI-X table entry
*
* If MSI-X auto-masking is enabled clear the mask bit, otherwise
* clear the ICR for the entry.
* Clear the ICR for the IRQ entry.
*/
static void nfp_net_irq_unmask(struct nfp_net *nn, unsigned int entry_nr)
{
if (nn->ctrl & NFP_NET_CFG_CTRL_MSIXAUTO) {
nfp_net_irq_unmask_msix(nn, entry_nr);
return;
}
nn_writeb(nn, NFP_NET_CFG_ICR(entry_nr), NFP_NET_CFG_ICR_UNMASKED);
nn_pci_flush(nn);
}
@ -1368,20 +1339,6 @@ nfp_net_parse_meta(struct net_device *netdev, struct sk_buff *skb,
* more cleanly separate packet receive code from other bookkeeping
* functions performed in the napi poll function.
*
* There are differences between the NFP-3200 firmware and the
* NFP-6000 firmware. The NFP-3200 firmware uses a dedicated RX queue
* to indicate that new packets have arrived. The NFP-6000 does not
* have this queue and uses the DD bit in the RX descriptor. This
* method cannot be used on the NFP-3200 as it causes a race
* condition: The RX ring write pointer on the NFP-3200 is updated
* after packets (and descriptors) have been DMAed. If the DD bit is
* used and subsequently the read pointer is updated this may lead to
* the RX queue to underflow (if the firmware has not yet update the
* write pointer). Therefore we use slightly ugly conditional code
* below to handle the differences. We may, in the future update the
* NFP-3200 firmware to behave the same as the firmware on the
* NFP-6000.
*
* Return: Number of packets received.
*/
static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
@ -1389,41 +1346,19 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
struct nfp_net_r_vector *r_vec = rx_ring->r_vec;
struct nfp_net *nn = r_vec->nfp_net;
unsigned int data_len, meta_len;
int avail = 0, pkts_polled = 0;
struct sk_buff *skb, *new_skb;
struct nfp_net_rx_desc *rxd;
dma_addr_t new_dma_addr;
u32 qcp_wr_p;
int pkts_polled = 0;
int idx;
if (nn->is_nfp3200) {
/* Work out how many packets arrived */
qcp_wr_p = nfp_qcp_wr_ptr_read(rx_ring->qcp_rx);
idx = rx_ring->rd_p % rx_ring->cnt;
if (qcp_wr_p == idx)
/* No new packets */
return 0;
if (qcp_wr_p > idx)
avail = qcp_wr_p - idx;
else
avail = qcp_wr_p + rx_ring->cnt - idx;
} else {
avail = budget + 1;
}
while (avail > 0 && pkts_polled < budget) {
while (pkts_polled < budget) {
idx = rx_ring->rd_p % rx_ring->cnt;
rxd = &rx_ring->rxds[idx];
if (!(rxd->rxd.meta_len_dd & PCIE_DESC_RX_DD)) {
if (nn->is_nfp3200)
nn_dbg(nn, "RX descriptor not valid (DD)%d:%u rxd[0]=%#x rxd[1]=%#x\n",
rx_ring->idx, idx,
rxd->vals[0], rxd->vals[1]);
if (!(rxd->rxd.meta_len_dd & PCIE_DESC_RX_DD))
break;
}
/* Memory barrier to ensure that we won't do other reads
* before the DD bit.
*/
@ -1431,7 +1366,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
rx_ring->rd_p++;
pkts_polled++;
avail--;
skb = rx_ring->rxbufs[idx].skb;
@ -1508,9 +1442,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
napi_gro_receive(&rx_ring->r_vec->napi, skb);
}
if (nn->is_nfp3200)
nfp_qcp_rd_ptr_add(rx_ring->qcp_rx, pkts_polled);
return pkts_polled;
}
@ -1895,9 +1826,8 @@ static void nfp_net_write_mac_addr(struct nfp_net *nn)
{
nn_writel(nn, NFP_NET_CFG_MACADDR + 0,
get_unaligned_be32(nn->netdev->dev_addr));
/* We can't do writew for NFP-3200 compatibility */
nn_writel(nn, NFP_NET_CFG_MACADDR + 4,
get_unaligned_be16(nn->netdev->dev_addr + 4) << 16);
nn_writew(nn, NFP_NET_CFG_MACADDR + 6,
get_unaligned_be16(nn->netdev->dev_addr + 4));
}
static void nfp_net_vec_clear_ring_data(struct nfp_net *nn, unsigned int idx)
@ -2675,8 +2605,7 @@ static const struct net_device_ops nfp_net_netdev_ops = {
*/
void nfp_net_info(struct nfp_net *nn)
{
nn_info(nn, "Netronome %s %sNetdev: TxQs=%d/%d RxQs=%d/%d\n",
nn->is_nfp3200 ? "NFP-32xx" : "NFP-6xxx",
nn_info(nn, "Netronome NFP-6xxx %sNetdev: TxQs=%d/%d RxQs=%d/%d\n",
nn->is_vf ? "VF " : "",
nn->num_tx_rings, nn->max_tx_rings,
nn->num_rx_rings, nn->max_rx_rings);
@ -2891,13 +2820,7 @@ int nfp_net_netdev_init(struct net_device *netdev)
nn->ctrl |= NFP_NET_CFG_CTRL_IRQMOD;
}
/* On NFP-3200 enable MSI-X auto-masking, if supported and the
* interrupts are not shared.
*/
if (nn->is_nfp3200 && nn->cap & NFP_NET_CFG_CTRL_MSIXAUTO)
nn->ctrl |= NFP_NET_CFG_CTRL_MSIXAUTO;
/* On NFP4000/NFP6000, determine RX packet/metadata boundary offset */
/* Determine RX packet/metadata boundary offset */
if (nn->fw_ver.major >= 2)
nn->rx_offset = nn_readl(nn, NFP_NET_CFG_RX_OFFSET);
else

13
drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
View File

@ -50,7 +50,7 @@
/**
* Configuration BAR size.
*
* The configuration BAR is 8K in size, but on the NFP6000, due to
* The configuration BAR is 8K in size, but due to
* THB-350, 32k needs to be reserved.
*/
#define NFP_NET_CFG_BAR_SZ (32 * 1024)
@ -186,18 +186,13 @@
#define NFP_NET_CFG_START_RXQ 0x004c
/**
* NFP-3200 workaround (0x0050 - 0x0058)
* @NFP_NET_CFG_SPARE_ADDR: DMA address for ME code to use (e.g. YDS-155 fix)
*/
#define NFP_NET_CFG_SPARE_ADDR 0x0050
/**
* NFP6000/NFP4000 - Prepend configuration
* Prepend configuration
*/
#define NFP_NET_CFG_RX_OFFSET 0x0050
#define NFP_NET_CFG_RX_OFFSET_DYNAMIC 0 /* Prepend mode */
/**
* NFP6000/NFP4000 - VXLAN/UDP encap configuration
* VXLAN/UDP encap configuration
* @NFP_NET_CFG_VXLAN_PORT: Base address of table of tunnels' UDP dst ports
* @NFP_NET_CFG_VXLAN_SZ: Size of the UDP port table in bytes
*/
@ -205,7 +200,7 @@
#define NFP_NET_CFG_VXLAN_SZ 0x0008
/**
* NFP6000 - BPF section
* BPF section
* @NFP_NET_CFG_BPF_ABI: BPF ABI version
* @NFP_NET_CFG_BPF_CAP: BPF capabilities
* @NFP_NET_CFG_BPF_MAX_LEN: Maximum size of JITed BPF code in bytes

45
drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c
View File

@ -63,9 +63,7 @@ static void nfp_netvf_get_mac_addr(struct nfp_net *nn)
u8 mac_addr[ETH_ALEN];
put_unaligned_be32(nn_readl(nn, NFP_NET_CFG_MACADDR + 0), &mac_addr[0]);
/* We can't do readw for NFP-3200 compatibility */
put_unaligned_be16(nn_readl(nn, NFP_NET_CFG_MACADDR + 4) >> 16,
&mac_addr[4]);
put_unaligned_be16(nn_readw(nn, NFP_NET_CFG_MACADDR + 6), &mac_addr[4]);
if (!is_valid_ether_addr(mac_addr)) {
eth_hw_addr_random(nn->netdev);
@ -86,7 +84,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
int tx_bar_no, rx_bar_no;
u8 __iomem *ctrl_bar;
struct nfp_net *nn;
int is_nfp3200;
u32 startq;
int stride;
int err;
@ -101,15 +98,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
goto err_pci_disable;
}
switch (pdev->device) {
case PCI_DEVICE_NFP6000VF:
is_nfp3200 = 0;
break;
default:
err = -ENODEV;
goto err_pci_regions;
}
pci_set_master(pdev);
err = dma_set_mask_and_coherent(&pdev->dev,
@ -149,15 +137,9 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
} else {
switch (fw_ver.major) {
case 1 ... 4:
if (is_nfp3200) {
stride = 2;
tx_bar_no = NFP_NET_Q0_BAR;
rx_bar_no = NFP_NET_Q1_BAR;
} else {
stride = 4;
tx_bar_no = NFP_NET_Q0_BAR;
rx_bar_no = tx_bar_no;
}
stride = 4;
tx_bar_no = NFP_NET_Q0_BAR;
rx_bar_no = tx_bar_no;
break;
default:
dev_err(&pdev->dev, "Unsupported Firmware ABI %d.%d.%d.%d\n",
@ -189,20 +171,10 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
max_rx_rings = (rx_bar_sz / NFP_QCP_QUEUE_ADDR_SZ) / 2;
}
/* XXX Implement a workaround for THB-350 here. Ideally, we
* have a different PCI ID for A rev VFs.
*/
switch (pdev->device) {
case PCI_DEVICE_NFP6000VF:
startq = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
tx_bar_off = NFP_PCIE_QUEUE(startq);
startq = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
rx_bar_off = NFP_PCIE_QUEUE(startq);
break;
default:
err = -ENODEV;
goto err_ctrl_unmap;
}
startq = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
tx_bar_off = NFP_PCIE_QUEUE(startq);
startq = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
rx_bar_off = NFP_PCIE_QUEUE(startq);
/* Allocate and initialise the netdev */
nn = nfp_net_netdev_alloc(pdev, max_tx_rings, max_rx_rings);
@ -214,7 +186,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
nn->fw_ver = fw_ver;
nn->ctrl_bar = ctrl_bar;
nn->is_vf = 1;
nn->is_nfp3200 = is_nfp3200;
nn->stride_tx = stride;
nn->stride_rx = stride;